package org.madore.damlengine;

import java.util.Map;
import java.util.HashMap;
import org.w3c.dom.Element;
import org.w3c.dom.Attr;

public abstract class TodoAttr extends TodoItem {

    public static abstract class Factory {
	public abstract TodoAttr newItem(Attr attr, Element owner,
					 Map<String,Object> context,
					 Map<String,Object> options);
    }

    protected static Map<String,Factory> damlAttrFactories;

    static {
	damlAttrFactories = new HashMap<String,Factory>();
	damlAttrFactories.put("xempty", new TodoXemptyAttr.Factory());
    }

    Attr attr;
    Element owner;
    Map<String,Object> context;
    Map<String,Object> options;

    public TodoAttr(Attr attr, Element owner,
		    Map<String,Object> context, Map<String,Object> options) {
	this.attr = attr;
	this.owner = owner;
	this.context = context;
	this.options = options;
    }

    public static TodoAttr getTodoAttr(Attr attr, Element owner,
				       Map<String,Object> context,
				       Map<String,Object> options) {
	Factory factory = null;
	String nsuri = attr.getNamespaceURI();
	if ( nsuri != null && nsuri.equals(DamlEngine.DAML_NS) )
	    factory = damlAttrFactories.get(attr.getLocalName());
	if ( factory == null )
	    return null;
	return factory.newItem(attr, owner, context, options);
    }

}